Body of humerus
Left humerus. Anterior view.
Left humerus. Posterior view.
Latin	corpus humeri
Gray's	subject #51 209

The body or shaft of the humerus is almost cylindrical in the upper half of its extent, prismatic and flattened below, and has three borders and three surfaces. Download high resolution version (653x1235, 79 KB) File links The following pages link to this file: Humerus Wikipedia:Grays Anatomy images with missing articles 5 Categories: Public domain images ... The humerus is a long bone in the arm or fore-legs (animals) that runs from the shoulder to the elbow. ... Download high resolution version (256x1000, 28 KB) File links The following pages link to this file: Humerus Wikipedia:Grays Anatomy images with missing articles 5 Categories: Public domain images ... Latin is an ancient Indo-European language originally spoken in Latium, the region immediately surrounding Rome. ... The humerus is a long bone in the arm or fore-legs (animals) that runs from the shoulder to the elbow. ...

Borders

Anterior

The anterior border runs from the front of the greater tubercle above to the coronoid fossa below, separating the antero-medial from the antero-lateral surface. Its upper part is a prominent ridge, the crest of the greater tubercle; it serves for the insertion of the tendon of the pectoralis major muscle. About its center it forms the anterior boundary of the deltoid tuberosity, on which the deltoid muscle attaches; below, it is smooth and rounded, affording attachment to the brachialis muscle. The Pectoralis major is a thick, fan-shaped muscle, situated at the upper front (anterior) of the chest wall. ... The deltoid tuberosity is the region on the shaft of the humerus to which the the deltoid muscle attaches. ... The deltoid muscle is the muscle forming the rounded contour of the human shoulder. ... Brachialis is a flexor muscle in the upper arm. ...

Lateral

The lateral border runs from the back part of the greater tubercle to the lateral epicondyle, and separates the anterolateral from the posterior surface. Its upper half is rounded and indistinctly marked, serving for the attachment of the lower part of the insertion of the teres minor muscle, and below this giving origin to the lateral head of the triceps brachii muscle; its center is traversed by a broad but shallow oblique depression, the spiral groove (musculospiral groove). The radial nerve runs in the spiral groove. Its lower part forms a prominent, rough margin, a little curved from behind forward, the lateral supracondylar ridge, which presents an anterior lip for the origin of the brachioradialis muscle above, and extensor carpi radialis longus muscle below, a posterior lip for the triceps brachii muscle, and an intermediate ridge for the attachment of the lateral intermuscular septum. The Teres minor is a narrow, elongated muscle of the rotator cuff. ... The triceps brachii muscle is a large three-headed skeletal muscle found in humans. ... The radial nerve is a nerve in the human body, that supplies the arm, the forearm and the hand. ... Brachioradialis is a muscle located in the forearm, that acts to flex the elbow. ... Extensor carpi radialis longus is one of the five main muscles that control movement at the wrist. ... The triceps brachii muscle is a large three-headed skeletal muscle found in humans. ... The lateral intermuscular septum extends from the lower part of the crest of the greater tubercle, along the lateral supracondylar ridge, to the lateral epicondyle; it is blended with the tendon of the Deltoideus, gives attachment to the Triceps brachii behind, to the Brachialis, Brachioradialis, and Extensor carpi radialis longus...

Medial

The medial border extends from the lesser tubercle to the medial epicondyle. Its upper third consists of a prominent ridge, the crest of the lesser tubercle, which gives insertion to the tendon of the teres major muscle. About its center is a slight impression for the insertion of the coracobrachialis muscle, and just below this is the entrance of the nutrient canal, directed downward; sometimes there is a second nutrient canal at the commencement of the radial sulcus. The inferior third of this border is raised into a slight ridge, the medial supracondylar ridge, which becomes very prominent below; it presents an anterior lip for the origins of the brachialis muscle and the pronator teres muscle, a posterior lip for the medial head of the triceps brachii muscle, and an intermediate ridge for the attachment of the medial intermuscular septum. Teres major is a muscle of the upper limb and one of six scapulohumeral muscles. ... The coracobrachialis is one of the three muscles that attach to the coracoid process of the scapula. ... Brachialis is a flexor muscle in the upper arm. ... The Pronator teres muscle is a muscle of the human body, in the forearm. ... The triceps brachii muscle is a large three-headed skeletal muscle found in humans. ... The medial intermuscular septum, thicker than the lateral intermuscular septum, extends from the lower part of the crest of the lesser tubercle of the humerus below the Teres major, along the medial supracondylar ridge to the medial epicondyle; it is blended with the tendon of the Coracobrachialis, and affords attachment...

Surfaces

Antero-lateral surface

The antero-lateral surface is directed lateralward above, where it is smooth, rounded, and covered by the deltoid muscle; forward and lateralward below, where it is slightly concave from above downward, and gives origin to part of the Brachialis. About the middle of this surface is a rough, triangular elevation, the deltoid tuberosity for the insertion of the deltoid muscle; below this is the radial sulcus, directed obliquely from behind, forward, and downward, and transmitting the radial nerve and profunda artery. The deltoid muscle is the muscle forming the rounded contour of the human shoulder. ... The deltoid muscle is the muscle forming the rounded contour of the human shoulder. ...

The antero-medial surface, less extensive than the antero-lateral, is directed medialward above, forward and medialward below; its upper part is narrow, and forms the floor of the intertubercular groove which gives insertion to the tendon of the latissimus dorsi muscle; its middle part is slightly rough for the attachment of some of the fibers of the tendon of insertion of the coracobrachialis muscle; its lower part is smooth, concave from above downward, and gives origin to the brachialis muscle. Latissimus dorsi is a large flat muscle located on the back. ... The coracobrachialis is one of the three muscles that attach to the coracoid process of the scapula. ... Brachialis is a flexor muscle in the upper arm. ...

Posterior surface

The posterior surface appears somewhat twisted, so that its upper part is directed a little medialward, its lower part backward and a little lateralward. Nearly the whole of this surface is covered by the lateral and medial heads of the Triceps brachii, the former arising above, the latter below the radial sulcus.

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant. The public domain comprises the body of all creative works and other knowledge—writing, artwork, music, science, inventions, and others—in which no person or organization has any proprietary interest. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ...